Beet curly top resistance in USDA-ARS Kimberly germplasm lines evaluated in Idaho, 2017

Eujayl, Imad A. and Strausbaugh, C.A. (2018) Beet curly top resistance in USDA-ARS Kimberly germplasm lines evaluated in Idaho, 2017. Plant Disease Management Reports. 12(CF152):1. 27 August 2018.

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Abstract

Curly top caused by Beet curly top virus is a widespread disease problem vectored by the beet leafhopper in semiarid sugar beet production areas. Host resistance is the primary defense against this problem, but resistance in commercial cultivars is only low to intermediate. In order to identify novel sources of curly top resistance, 13 sugar beet lines were screened in a disease nursery in 2017. The lines were arranged in a randomized complete block design with six replications. A curly top epiphytotic was created by releasing six viruliferous beet leafhoppers per plant at the four- to six-leaf growth stage on 14 Jun. Foliar symptoms were evaluated on 6 Jul using a scale of 0-9 (0 = healthy and 9 = dead) in a continuous manner. Curly top symptom development was uniform and no other disease problems were evident in the plot area. The checks performed as expected for both the visual rating and ELISA. Based on both visual ratings and ELISA, KDH4-9 (PI683513) and KDH13 (PI663862) performed the same as the resistant check. All the KDH13 progenies (crossed to susceptible parental lines) had moderate visual ratings, while two of the progenies (KDH13/EMS9 and KDH13/19-19) had ELISA values that were not different from the resistant check. KDHEMS09 is new line that had very low virus accumulation. These results and germplasm information will be accessible through the USDA-ARS, NPGS GRIN database (http://www.ars-grin.gov/npgs/index.html). These germplasm lines will be released to the general public, so they can be utilized to improve curly top resistance in commercial sugar beet cultivars.

Item Type:	Article
NWISRL Publication Number:	1629
Subjects:	Irrigated crops > Sugarbeet > Curly top Irrigated crops > Sugarbeet > Resistance Irrigated crops > Sugarbeet
Depositing User:	Users 6 not found.
Date Deposited:	28 Aug 2018 23:06
Last Modified:	30 Dec 2020 16:00
Item ID:	1673
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1673